Department of Physics, University of California, Santa Barbara, California 93106, USA.
Phys Rev Lett. 2011 Apr 8;106(14):141302. doi: 10.1103/PhysRevLett.106.141302.
We consider landscape models that admit several regions where the conditions for eternal inflation hold. It is shown that one can use the no-boundary wave function to calculate small departures from homogeneity within our past light cone despite the possibility of much larger fluctuations on super horizon scales. The dominant contribution comes from the history exiting eternal inflation at the lowest value of the potential. In a class of landscape models this predicts a tensor to scalar ratio of about 10%. In this way the no-boundary wave function defines a measure for the prediction of local cosmological observations.
我们考虑了允许存在多个区域的景观模型，在这些区域中，永恒通胀的条件得以维持。结果表明，人们可以利用无边界波函数来计算我们过去的光锥内的小尺度非均匀性，尽管在超视界尺度上可能存在更大的涨落。主要的贡献来自于在势能的最低值处从永恒通胀中退出的历史。在一类景观模型中，这预测了张量到标量的比值约为 10%。这样，无边界波函数就定义了对局部宇宙观测的预测的一种度量。
